Dera in context: Street-network sprawl trends

Dera in context

1.62.43.24<19751976–19901991–20052006–2020SNDi of street additions
1.62.43.24<19751976–19901991–20052006–2020SNDi of entire street network
DeraOromia (Region)Ethiopia (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Dera plotted against Oromia and Ethiopia. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Dera's incremental SNDi rose from 1.5 to 2.17 between 1991-2005 and 2006-2020. In terms of the aggregate network, Dera ranked 9th out of 71 cities in Oromia and 24th out of 181 in Ethiopia as of 2020.

New Street Additions (2006–2020)

SNDi value
2.17
Rank in Ethiopia
25th of 181
Rank in Oromia
8th of 71

Entire Network (Aggregate)

SNDi value
1.76
Rank in Ethiopia
24th of 181
Rank in Oromia
9th of 71

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

0481216<19751976–19901991–20052006–2020SNDi of street additions
0481216<19751976–19901991–20052006–2020SNDi of entire street network
DeraDiraiBrondong

While Dirai and Brondong both built increasingly disconnected streets over time, Dera fluctuated in its street-construction patterns in new street additions. Looking at the full network, Dirai and Brondong both became progressively more disconnected, while Dera fluctuated in connectivity. Dera and Brondong have been growing further apart in their street-network character since 1975.